Linus yale



.LINUS YALE, JR., OF PHILADELPHIA, PENNSYLVANIA.

LOCK.

Specification forming part of Letters Patent No. 22,048, dated November 9, 1858; Ressued November 5, 1872, No. 5,131.

To all whom 'it may concern.'

Be it known that I, LINUS YALE, J r., of Philadelphia, in the State of Pennsylvania, have invented a new and Improved Manner of Constructing Locks for Safes, Banks, Doors, &c.; and I do hereby declare that the following is a full and exact description of the same, reference being had to the drawings hereunto annexed.

The .nature of my improvement consists in providing a main bolt or bolts with two or more sets of stops or tumblers so arranged that by application of the proper key to or otherwise adjusting one set shall release the bolt irrespective and independent of either of the other sets. These sets of tumblers may be of similar construction requiring the application of one common key or of entirely different kinds requiring a different key or adjustment, the object being to provide a way to get into a safe at any time without violence, even though one part of the lock may be deranged by accident or otherwise.

In the drawings Figure l, is a plan of the lock showing the general arrangement of two of the simplest form of tumblers to hold out the main bolt D, by the two fence pins B1, and B2, on the cross bolt C. Fig. 2, is a vertical section of the same through 1, l. Fig. 3, is a vertical section through 2, 2. Fig. 4, is a horizontal sect-ion through 3, 3. Fig. 5, is a plan of cross bolt C. Fig. 6, is another plan of cross bolt C moved into an unlocked position. Fig. 7 is the key in section, E.

The main bolt D, slides in the usual man ner by means of the key working in the one or the other of the two talons Z1 and d2 in the ordinary manner. The cross bolt C, is also provided with two similar talons c1 and c2 for another portion of the revolution of the key to engage in, and it also has two fence pins B1 and B2 fitted to pass through the gatings al and a2 of the tumblers A1 and A2, respectively. These Jfence pins when the lock is locked stand immediately behind the arms or projections (Z3 and d* on the main bolt D, thereby preventing its retraction until provision is made for it by adjustment of one of the tumblers, hereinafter more particularly described. The cross bolt C is moved from its present position either one way or the other as the key is applied above or below, the effect being precisely the same on the bolt, whether the fence goes up or down as it releases it either way. The tu1nblers A1 and A2 slide in the same direction as the bolt D, being driven one way by the key, and back again by springs o1 and 02, in the ordinary manner. They are gated al and a2 usual for the passage of the fence pins Bl and B2. The drill pins F1 and F2 serve to steady the key in its revolu t-ion.

The drawing shows only the working parts of the lock without case or cover that all parts may be distinctly shown.

Operation By putting the key on to the drill pin F1 and turning to the right the wing or bit e will drive the tumbler A1 to the proper distance to bring the gating al opposite the fence pin B1, when the key immediately engages in the talon c1 and while still holding the tumbler in position, moves the cross-bolt C until the fence pin B1 has passed through the gating. Then by releasing the main bolt (for the other fence pin it will be observed does not require to pass through a gating in moving upward) when the key having worked into the talon Z1 of the main bolt D retracts it at the same time it allows the tumbler to be driven back to its original position. But, should anything prevent thus adjusting the tumbler A1 or passing the fence pin B1 through it and consequently the retraction by that means of the main bolt D, it will be seen that the key may be applied to the other drill pin F2 and being revolved to the left will adjust the tumbler A2 to admit of its passing the fence pin B2, thereby releasing the main bolt D precisely as well as though the other application had been successful, and entirely regardless of the position of the tumbler A. In locking the key must of course be applied to the part unlocked as the one which is locked cannot be more locked.

I make no claim to the particular form of tumblers or other parts of this lock as my improvement can be adapted and applied to any of the old forms of lock however simple or however complex and costly; but

I do claim- Providing a main bolt or bolts with two or more systems or sets of stops or tumblers 01 their equivalents Whether alike in form I shall release the bolt irrespective and indeand construction or dissimiler-commanded pendent of either of the other sets substanby or obedient to one and the same key or tially as and for the purpose described.

its equivalent or by separate and distinct LINUS YALE, JR. keys or their equivalent-s0 placed and arranged, Whether near or distant, that When its key is applied to eithei` one set, that set Vitnesses:

CHARLES D. FREEMAN, JOHN HOSKIN.

[FIRST PRINTED 1911.] 

